vue前端頁面數據加載添加loading效果的實現
前端頁面數據加載添加loading效果
在前端上傳文件或者加載數據的時候會有一段等待時間,如果加上一個loading效果會減輕用戶等待的枯燥,這裡就來記錄學習一下如何實現loading效果。
效果大致如下,樣式我們是可以自定義的。
具體實現
let thisContent = this; let loading = thisContent.$loading({ lock: true, text: '上傳中,請稍候...', spinner: 'el-icon-loading', background: 'rgba(0, 0, 0, 0.5)' }) // 中間進行一系列的操作 // 上傳成功後關閉loading, 並顯示上傳成功 loading.close(); thisC.$message('上傳文件成功');
這樣一個簡單的loading效果就實現瞭。
全局loading配置
請求的時候 需要一個全局loading來攔截 若是頁面單獨引用的話 就有點繁瑣瞭 所以需要再全局封裝一個 此時就要明白 再哪裡封裝瞭 先考慮一下 為什麼要用
一方面是為瞭防止重復操作
另一方面是為瞭一個加載的效果能夠更明顯
所以 再請求的時候加 就能聯想到axios攔截器的位置處理瞭 話不多說 開始擼代碼 全程copy就行瞭
1 再src/componennts/Spinner下面建立一個index.vue
<template> <div class="loading-page bg-opacity" :style="{display:hide?'none':'block'}"> <div class="dark" @dblclick="close"> <div class="la-ball-spin-clockwise la-2x"> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> <div></div> </div> </div> </div> </template>
<script> export default { data() { return { hide: true } }, methods: { close() { document.querySelector('.loading-page').style.display = 'none'; } } } </script>
<!-- Add "scoped" attribute to limit CSS to this component only --> <style scoped lang="scss"> .show { display: block; } .hide { display: none; } .loading-page { background: rgba(0, 0, 0, .65); display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; min-height: 100%; min-width: 100%; transition: all 1s; z-index: 20000; &.hide { display: none; } &.bg-opacity { background: rgba(0, 0, 0, 0); } .dark { width: 100px; height: 100px; border-radius: 10px; background: rgba(0, 0, 0, .65); position: absolute; top: 40%; left: 50%; margin-left: -50px; text-align: center; img { width: 70px; height: 70px; margin-top: 15px; } } } .la-ball-spin-clockwise{ width: 64px; height: 64px; margin-top: 18px; margin-left: 18px; display: block; font-size: 0; color: #fff; position: relative; box-sizing: border-box; animation-play-state: running; } .la-ball-spin-clockwise>div{ width: 16px; height: 16px; margin-top: -8px; margin-left: -8px; position: absolute; border-radius: 100%; animation: ball-spin-clockwise 1s infinite ease-in-out; display: inline-block; float: none; background-color: currentColor; border: 0 solid currentColor; animation-play-state: running; } .la-ball-spin-clockwise>div:nth-child(1){ top: 5%; left: 50%; webkit-animation-delay: -.875s; -moz-animation-delay: -.875s; -o-animation-delay: -.875s; animation-delay: -.875s; } .la-ball-spin-clockwise>div:nth-child(2) { top: 18.1801948466%; left: 81.8198051534%; -webkit-animation-delay: -.75s; -moz-animation-delay: -.75s; -o-animation-delay: -.75s; animation-delay: -.75s; } .la-ball-spin-clockwise>div:nth-child(3) { top: 50%; left: 95%; -webkit-animation-delay: -.625s; -moz-animation-delay: -.625s; -o-animation-delay: -.625s; animation-delay: -.625s; } .la-ball-spin-clockwise>div:nth-child(4) { top: 81.8198051534%; left: 81.8198051534%; -webkit-animation-delay: -.5s; -moz-animation-delay: -.5s; -o-animation-delay: -.5s; animation-delay: -.5s; } .la-ball-spin-clockwise>div:nth-child(5) { top: 94.9999999966%; left: 50.0000000005%; -webkit-animation-delay: -.375s; -moz-animation-delay: -.375s; -o-animation-delay: -.375s; animation-delay: -.375s; } .la-ball-spin-clockwise>div:nth-child(6) { top: 81.8198046966%; left: 18.1801949248%; -webkit-animation-delay: -.25s; -moz-animation-delay: -.25s; -o-animation-delay: -.25s; animation-delay: -.25s; } .la-ball-spin-clockwise>div:nth-child(7) { top: 49.9999750815%; left: 5.0000051215%; -webkit-animation-delay: -.125s; -moz-animation-delay: -.125s; -o-animation-delay: -.125s; animation-delay: -.125s; } .la-ball-spin-clockwise>div:nth-child(8) { top: 18.179464974%; left: 18.1803700518%; -webkit-animation-delay: 0s; -moz-animation-delay: 0s; -o-animation-delay: 0s; animation-delay: 0s; } @-webkit-keyframes ball-spin-clockwise{ 0%,100%{ opacity:1; -webkit-transform:scale(1); transform:scale(1)} 20%{ opacity:1 } 80%{ opacity:0; -webkit-transform:scale(0); transform:scale(0) } } @-moz-keyframes ball-spin-clockwise{ 0%,100%{ opacity:1; -moz-transform:scale(1); transform:scale(1) } 20%{ opacity:1 } 80%{ opacity:0; -moz-transform:scale(0); transform:scale(0) } } @-o-keyframes ball-spin-clockwise{ 0%,100%{ opacity:1; -o-transform:scale(1); transform:scale(1) } 20%{ opacity:1 } 80%{ opacity:0; -o-transform:scale(0); transform:scale(0) } } @keyframes ball-spin-clockwise{ 0%,100%{ opacity:1; -webkit-transform:scale(1); -moz-transform:scale(1); -o-transform:scale(1); transform:scale(1) } 20%{ opacity:1 } 80%{ opacity:0; -webkit-transform:scale(0); -moz-transform:scale(0); -o-transform:scale(0);transform:scale(0) } } </style>
2 再utils下面tools.js
class Msg { static loading() { document.querySelector('.loading-page').style.display = 'block'; } static hideLoading() { document.querySelector('.loading-page').style.display = 'none'; } } export { Tools, Msg }
3 再utils下面建議一個request.js 封裝的axios請求
import axios from 'axios' import qs from 'qs' import { MessageBox, Message } from 'element-ui' import store from '@/store' import { getToken } from '@/utils/auth' import router from '@/router' import {Msg} from '@/utils/tools'; import { removeToken } from '@/utils/auth' var allResquest = 0; // create an axios instance const service = axios.create({ baseURL: process.env.VUE_APP_BASE_API, // api 的 base_url withCredentials: true, // 跨域請求時發送 cookies paramsSerializer: params => { // 查詢字符串中的數組不使用方括號 return qs.stringify(params, { indices: false }) }, timeout: 15000 // request timeout }) // request interceptor service.interceptors.request.use( config => { if (store.getters.token) { config.headers['Authorization'] = 'Bearer ' + getToken() config.headers['filterMode'] = localStorage.getItem('dataType') } config.headers['project'] = "csr" allResquest = allResquest + 1; if (config.mask !== true) { Msg.loading() } return config }, error => { return Promise.reject(error) } ) // response interceptor service.interceptors.response.use( /** * If you want to get information such as headers or status * Please return response => response */ /** * 下面的註釋為通過在response裡,自定義code來標示請求狀態 * 當code返回如下情況則說明權限有問題,登出並返回到登錄頁 * 如想通過 XMLHttpRequest 來狀態碼標識 邏輯可寫在下面error中 * 以下代碼均為樣例,請結合自生需求加以修改,若不需要,則可刪除 */ response => { allResquest = allResquest - 1; const res = response.data; if (response.status === 200) { if (allResquest === 0) { Msg.hideLoading(); } // 50008 系統無此賬號 // 50010 賬號禁用 // 50012 賬號或密碼錯誤 // 50013 主賬號被禁用,禁止登錄 // 50014 token失效 // 50015 登錄失敗,無操作權限,請聯系系統管理員! // 50016 驗證碼錯誤 // 429 限流 服務器擁擠,請稍後再試 // -999 未知錯誤 // 403 無權限 if (res.code === 50008 || res.code === 50010 || res.code === 50012 || res.code === 50013 || res.code === 50016 || res.code === 50015 || res.code === 429 || res.code === -999 || res.code === 403 || res.code === 500) { Message({ message: res.msg || 'error', type: 'error', duration: 5 * 1000, offset: 0 }) return Promise.reject(res.msg || 'error') } else if (res.code === 50014) { if (store.getters.token) { removeToken() } MessageBox.alert( res.msg,'錯誤提示', { confirmButtonText: '確定', callback: action => { store.dispatch('logout') router.push(`/login`) } }) return false } return res } }, error => { allResquest = allResquest - 1; Msg.hideLoading(); Message({ message: '服務擁擠,請稍後重試!', type: 'error', duration: 5 * 1000 }) return Promise.reject(error) } ) export default service
4 修改app.vue
<template> <div id="app"> <router-view /> <Spinner></Spinner> </div> </template>
<script> import Spinner from '@/components/Spinner' export default { name: 'App', components: { Spinner } } </script>
<style> </style>
以上為個人經驗,希望能給大傢一個參考,也希望大傢多多支持WalkonNet。
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